55512638 has 8 divisors (see below), whose sum is σ = 83508600. Its totient is φ = 27676440.

The previous prime is 55512607. The next prime is 55512673. The reversal of 55512638 is 83621555.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 55512598 and 55512607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39068 + ... + 40463.

It is an arithmetic number, because the mean of its divisors is an integer number (10438575).

Almost surely, 2^55512638 is an apocalyptic number.

55512638 is a deficient number, since it is larger than the sum of its proper divisors (27995962).

55512638 is a wasteful number, since it uses less digits than its factorization.

55512638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79882.

The product of its digits is 36000, while the sum is 35.

The square root of 55512638 is about 7450.6803716171. The cubic root of 55512638 is about 381.4731321978.

The spelling of 55512638 in words is "fifty-five million, five hundred twelve thousand, six hundred thirty-eight".